worksheet - box and whisker film. How to compare box and whisker plots. Using bar charts, pie charts and frequency diagrams can make information easier to digest. STUDY. From working out the cumulative frequency to constructing a box plot to then comparing two data sets, its all covered in these videos. The box plot tells you some important pieces of information: The lowest value, highest value, median and quartiles. The image above is a comparison of a boxplot of a nearly normal distribution and the probability density function (pdf) for a normal distribution. Speed Time GRaphs. Sign in, choose your GCSE subjects and see content that's tailored for you. GCSE Maths from Scratch 9.04 Comparing 2 Sets of Data using the Mean and Range - Jack Brown. Home Economics: Food and Nutrition (CCEA). Box Plots. Usually it will be drawn with an accompanying axis or number line for context. To find the lower quartile, there are 11 numbers, so \(\frac{11 + 1}{4}\) = 3rd number. 2. Box Plots. A box plot is a concise way of displaying information about the median, range and quartiles of a data set. 2. It looks at what they are, how to draw them and how to interpret them. Taller boxes imply more variable data. Read more. … GCSE (1 – 9) Box Plots Name: _____ Instructions • Use black ink or ball-point pen. The example box plot below shows the distribution of ages of 100 tenants. Which data set has a larger sample size? The guideline for median, lower quartile and upper quartile can be used to plot the sections of the box plot. Sameena used her results to work out the information in this table. Arrow down to Xlist: Press 2nd 1 for L1. Drawing a box plot from a cumulative frequency graph is straightforward as long as the median and quartiles have been found. Test. Comments such as “they have a bigger interquartile range” without knowing what that means, or worse still “they have a high interquartile range, so they are taller”, are all too prevalent. Info. 3) Draw a box plot from a cumulative frequency diagram. (2 Marks) The box plot below shows the amount spent by people over the Christmas period in 2015. b. Tes Global Ltd is stratified sampling. If you are asked to compare box plots (for example between two classes) you should mention at least two things – one about averages, ie. How to draw and use box plots? 2. Created: Jan 22, 2014| Updated: Feb 24, 2019. Preview and details Files included (2) ppt, 3 MB. Box plots are a huge issue. If you compare the IQR of the two box plots, the IQR for College 2 is larger than the IQR for College 1. Wider ranges (whisker length, box size) indicate more variable data. Comparing box and whisker diagrams in a meaningful, relevant way is something that higher GCSE students find notoriously difficult. (2 marks) For 1 mark, one of: In . Videos, worksheets, 5-a-day and much more Box Plots give more information on the spread of data, which is useful when comparing sets of data: • a compact box, with long whiskers, shows the probable presence of outliers; • a compact box, with short whiskers, shows a … • Answer all questions. Powered by Create your own unique website with customizable templates. Comparing box and whisker diagrams in a meaningful, relevant way is something that higher GCSE students find notoriously difficult. It looks at what they are, how to draw them and how to interpret them. Box plots. By Consumer Dummies . Box plots are particularly good for comparing different distributions at a glance. Given some data, we can draw a box and whisker diagram (or box plot) to show the spread of the data. The image above is a comparison of a boxplot of a nearly normal distribution and the probability density function (pdf) for a normal distribution. 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